Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6679530 | Progress in Energy and Combustion Science | 2018 | 26 Pages |
Abstract
Anthropogenic emissions of non-CO2 greenhouse gases such as fugitive methane contribute significantly to global warming. A review of fugitive methane combustion mitigation and utilisation technologies, which are primarily aimed at methane emissions from coal mining activities, with a focus on modelling and simulation of ultra-lean methane oxidation/combustion is presented. The challenges associated with ultra-lean methane oxidation are on the ignition of the ultra-lean mixture and sustainability of the combustion process. There is a lack of fundamental studies on chemical kinetics of ultra-lean methane combustion and reliable kinetic schemes that can be used together with computational fluid dynamics studies to design and develop advanced mitigation systems. Mitigation of methane as a greenhouse gas calls for more efforts on understanding ultra-lean combustion. Recuperative combustion provides a promising means for mitigating ultra-lean methane emissions. Progress is needed on effective methods to ignite and to recuperate and retain heat for oxidation/combustion of the ultra-lean mixtures. Catalysts can be very effective in reducing the temperatures required for oxidation while plasmas may be utilised to assist the ignition, but thermodynamic/aerodynamic limits of burning ultra-lean methane remain unexplored. Further technological developments may be focussed on developing innovative capturing technology as well as technological innovations to achieve effective ignition and sustainable oxidation/combustion.
Keywords
GWPSGSCSIROCO2-eqTSTPSAODSCMRCMMCFCEECGHGHFCVAMODTDNSCO2-equivalentLESEDCCatalytic monolith reactorEGRPFCOne-dimensional turbulenceIgnitionMILD combustionTransition state theoryProbability density functionGas turbineCombustion stabilitypressure swing adsorptionCFDComputational fluid dynamicsMolecular dynamicsRANSReynolds-averaged Navier–StokesCommonwealth Scientific and Industrial Research OrganizationLarge Eddy SimulationDirect Numerical SimulationMILDPerfluorocarbonLemVentilation air methaneCoal mine methaneEddy Dissipation ConceptHydrofluorocarbonglobal warming potentialPdfchlorofluorocarbonUncertainty quantificationGreenhouse gasexhaust gas recirculation
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
X. Jiang, D. Mira, D.L. Cluff,